Correlation between pore compressibility
at a given pressure
and
initial pore compressibility at
initial formation pressure :
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| anchor | Dobrynin |
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| \displaystyle c_r(p) = c_{ri} \cdot \frac{ \ln \left( \frac{ p_n }{p_{\rm max}} \right) }{ \ln \left( \frac{p_{ni}}{p_{\rm max}} \right) } |
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| p_n = p_{\rm min} + 1.75 \cdot \phi^{0.51} \cdot (p_{\rm max} - p) |
| LaTeX Math Block |
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| p_{ni} = p_{\rm min} + 1.75 \cdot \phi^{0.51} \cdot (p_{\rm max} - p_i) |
| Wide pressure range: pmin = 1 MPa < p < pmax = 200 MPa
|
See also
Petroleum Industry / Upstream / Subsurface E&P Disciplines / Petrophysics / Geomechanical Rock Modelling / Pore compressibility / Pore compressibility-pressure correlations
Reference
[in Russian] Добрынин В.М., Деформации и изменения физических свойств коллекторов нефти и газа, Недра, Москва, 1970 г., 239 стр., УДК: 552.5; 553.98:551.25 (021)
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